Clamping-plate for timber structures



(No Model.)

, G. W. ZEIG-LER. GLAMPING PLATE FOR TIMBER STRUGTURES. No. 409,546. I Patented Aug. 20, 1889.

I w/r/vrssm; mum/wow STATES PATENT, OFFICE.

GEORGE w. 'ZEIGLERQOF PHILADELPHIA, PENNSYLVANIA.

\ cL AMPlNG -PLATE FOR TiMBER STRUCTURES.

SPEOIFTCATION forming part of Letters Patent No. 409,546, dated August 20, 1889.

Application filed May 13, 1889. Serial No. 310,606- (No model.)

To all whom it may concern: r

Be it known that I, GEORGE W. ZEIGLER, a

, citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have, inventedcertain new and useful Improvements in Washers for Clamped Timber Structures; and I do hereby declare the following to be a sufliciently full, clear, and exact description thereof as to enable othersskilled in the art to make and use the said invention.

This invention relates to the securing together of parts of frame-works and scaifolds formed of wood,"and has for its object the ing of the timbers upon the plates is prevented.

' The construction and practical'application of this invention to use are illustrated 'invthe accompanying drawings, in which 'Figure'l. shows a plan, Fig. 2 an edge View, andFig. 3 a section, of timbers with a screwbolt and a nut and washer with this invention applied. 3

The same eference-marks indicate like parts in the several figurea; i}

Referring to the drawings, A represents a plate of ductile metal; B, an aperture out therein by a die or punch.

O are teeth formed by bending alternately up and down the portion of metal cut in making the aperture B,which metal is-not severed from .the plate A.

E is a bolt-hole.

F is a bolt passing through the bolt-holeE,

washersG G. and pieces of lumber K K, and

provided with a nut H.

More than one bolt-hole E and bolt F may be used in the same plate, and the plates may be made by casting. To use this invention the plate A is laid upon the pieces of lumber K K to be united and holes bored in the lumber to coincide with the hole E in the plat-e A.

The plate A is then laid between the timber, the bolt F and washers G G applied, and the nut H screwed on until the timbers K K are pressed into intimate contact with the plate A and the teeth 0 sunk into the timbers K K.

Having described this invention, what I claim is-' As a new'article of hardware manufacture,

the plate A, having teeth 0 upon both sides thereof, and an apertureadapted to receive a screw-bolt, constructed substantially as and for the purpose set forth.

GEORGE W. ZEIGLER.

W'itn'esses: A

' J. DANIEL EBY,

VAN W cK BUoD. 

